Briefly, 1) You must to have clean and dust-free all the material, 2) Put the flat slide in a surface, 3) Use the medicine dropper to suck up drops of liquid sample, 4) Place one drop directly in the center of the flat slide, 5) Gently lower your cover slip onto the flat slide and do not press down on the cover slip once it is in place, 6) Place the flat slide with the cover slip in the microscope and watch.